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Tag Archives: bind

cPanel: How to replicate DNS zones to external Bind server without views

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I’ve got a complain from the customer of my recent cPanel server installation that his DNS zones are not replicated by our main DNS servers and therefore they have problems.

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Sysadmin: block these pesky recursive DNS queries with iptables rate limiting rules

dns-reflectIf you are managing Linux server you have probably heard about recent DNS amplification attacks that were using misconfigured DNS servers.
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Sysadmin shell oneliner: update serial in all DNS zones

Sometimes you just need to force updates on slave DNS servers. The easiest way to do it is to increase zone serials on master server. what if there are hundreds of zone files? Here is one way to do it
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